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Is the presence of charge necessary for the existence of electrostatic potential?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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What is the difference between conductors and insulators?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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What do you mean by binary variables?

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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Define the terms resolving power and magnifying power or angular magnification.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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Define electronics.

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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1 answer 174 views

How would you define potential difference between two points? Define its unit.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 134 views

What do you mean by electric power? Define its unit

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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What do you understand by thermionic emission?

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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If a high-voltage power line fell across your car while you were in the car, why should you not come out of the car?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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1 answer 125 views

State and explain Joule's law. ,

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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What is NOR gate? Give its symbol and truth table.

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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What is a NOT operation? Write down its truth table.

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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Why or why not concave mirrors are suitable for make up?

asked Oct 22, 2017 in Physics by sonia (36.5k points)

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1 answer 124 views

Rubber tyres get charged from friction with the road; What is the polarity of the charge?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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1 answer 68 views

What is AND gate? Give its symbol and truth table.

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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1 answer 68 views

What is an AND operation? Write down its truth table.

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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1 answer 117 views

Define the term time period and frequency.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 119 views

Explain why, a glass rod can be charged by rubbing when held by hand.

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Why colour of bromine water discharges on addition of ethene in it?

asked Sep 21, 2017 in Chemistry by shamroz (41.5k points)

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What is meant by potential difference and electromotive force (emf)?

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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