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What can we opened but Cannot be closed?

Answer Expert Verified An egg can be opened if we break it but it can’t be closed once broken.

Is it opened or closed?

“closed door” is a noun phrase; “closed” is served as an adjective modifying the noun “door”. The word OPEN can be a verb and also an adjective. “is open” indicates an open state; the door is not closed (open is functioned as an adjective).

Can be open or can be opened?

Open does not refer to any past event, while opened does. Both refer to the same current state, but opened opens the door to an earlier narrative, if you will. The door was once closed*, and someone or something changed it. The use of opened indicates a larger history for the object that open entirely ignores.

What is the meaning of open and closed things?

open – affording free passage or access; “open drains”; “the road is open to traffic”; “open ranks” 2. closed – (set theory) of an interval that contains both its endpoints.

Is universe a closed system?

The universe itself is a closed system, so the total amount of energy in existence has always been the same. The forms that energy takes, however, are constantly changing. The sum of these is called mechanical energy. The heat in a hot object is the mechanical energy of its atoms and molecules in motion.

Which one is true in a closed system?

In closed system only energy transfer can takes place and no mass transfer takes place. Explanation : Only energy transfer can takes place in closed system. When both the energy as well as the mass transfer take place in system then it is called open system.

Is battery a closed system?

A Lithium battery is a closed system.

Are batteries a closed system?

In this sense it functions like an battery. The difference between a fuel cell and a battery is that whereas a battery is a closed system, i.e., it has a limited amount of fuel to convert, a fuel cell is an open system, i.e., fuel is continuously fed into the system from an external source.

When a battery is connected to a closed circuit?

When a battery is connected to a closed circuit, charge flow in the circuit almost instantaneously. Explain. As soon as the battery is connected to the circuit and circuit is closed, a potential difference is felt over the entire circuit. This causes the charges begin to flow.

What causes a voltage decrease in a battery when connected to a closed circuit with current flow?

The electrons in a battery circuit flow from the negative terminal to the positive one, so they are gradually depleting the terminal charge rather than adding to it. The battery eventually wears out.

When a battery is connected across a resistor of 16ohm?

where r is the Internal Resistance of the Battery and ε is the e.m.f. of the battery. We know that the e.m.f. of the battery will never change if the resistance or the potential will change. Hence, the Internal Resistance of the Battery is 2.86 Ω. Hope it helps.

When a battery is connected across a resistor?

When a battery connected across a resistor of 16Ω , the voltage across the resistor is 12 V. When the same battery is connected across a resistor of 10Ω , voltage across it is 11V.

When a resistor of 20 Ohm is connected across a battery?

When a resistor of 20 Ω is connected in series with a battery, the current is 0.5 A. When a resistor of 10 Ω is connected, the current becomes 0.8 A. Calculate the emf and the internal resistance of the battery. Let, ‘E’ be the emf of the battery and ‘r’ its internal resistance.

When a resistance of 9.5 Ohm is connected across a battery?

When a resistance of 9.5 ohm is connected across a battery,the voltage across the resistance is 11.4 V. If the resistance connected across the same battery is 11.5 ohm,the voltage across the resistance is 11.5V A) The emf of the battery is 12 V.

When a current of 0.2 A is drawn from a battery?

When a current of 0.2 A is drawn from a battery, then potential difference between its terminals is 20 V and when a current of 2 A is drawn, then the potential difference drops to 16 V.

When a battery is connected across a series combination of self inductance?

When a battery is connected across a series combination of self inductance L and resistance R , the variation in the current i with time t is best represented by. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Are batteries chemical or electrical energy?

The chemistry of a battery. A battery is a device that stores chemical energy, and converts it to electricity. This is known as electrochemistry and the system that underpins a battery is called an electrochemical cell.

What is the current in a 100 ohm resistor connected to a 0.40 volt source of potential difference?

What is the current in a 100. -ohm resistor connected to a 0.40-volt source of potential difference? V =hlov .

When a resistance of 20 ohm is connected in parallel with a galvanometer?

When a resistance of 20 ohm connected in parallel. with a galvanometer then its deflection reduces. from 50 divisions to 10 divisions, the resistance of.

What is moving coil galvanometer?

Moving coil galvanometer is an electromagnetic device that can measure small values of current. It consists of permanent horseshoe magnets, coil, soft iron core, pivoted spring, non-metallic frame, scale, and pointer.

Which one of the following is likely to have the largest resistance?

Galvanometer

When a 12 Ω resistor is connected with a moving coil galvanometer then its deflection reduces from 50 divisions to 10 divisions the resistance of the galvanometer is?

When a 12 Ω resistor is connected with a moving coil galvanometer then its deflection reduces from 50 divisions to 10 divisions. The resistance of the galvanometer is. 24 Ω

How ammeter is made from galvanometer?

Galvanometer to an Ammeter:- Ammeter A galvanometer is converted into an ammeter by connecting a low resistance in parallel with the galvanometer. This low resistance is called shunt resistance S. The scale is now calibrated in ampere and the range of ammeter depends on the values of the shunt resistance.