Question # 1

The electrostatic force acting on two charges each of 1C separated by 1m is about:

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9X10⁹ N

9X10^-9 N

9X10⁸ N

9X10^-8 N

The amount of current that can be painful is:

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0.005A

0.001A

1A

2A

What does a switch do:

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Oppose the current

Open and close the circuit

Store energy

Provide voltage

What will be the capacitance of capacitor by joining them in parallel:

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Increased

Much less

Decrease

No change

For the emission of electrons from the tungsten filament the values of current and voltage are taken as:

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0.1 A and 2V

0.2 A and 4V

0.3A and 6V

0.4A and 8V

When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:

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6 NC^-1

3 NC^-1

12 NC^-1

1.5 NC^-1

Two switches attached in series work on which operation?

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AND operation

OR operation

NOT operation

NOR operation

A and B are the two inputs of a NOR gate. Its output would be 1 when:

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A = 1, B = 1

A = 0 , B = 1

A = 1, B = 0

A = 0 , B = 0

The output of a NAND gate is 0 when

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Both of its inputs are 0

Both of its inputs are 1

any of its inputs is 0

any of its inputs is 1

In variable capacitor, dielectric medium is:

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Paper

Air

Mica

Ceramic

If we double the distance between two charges, then force becomes:

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4-times

¼ th

Double

Half

1 volt is equal to:

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JC

JC^-1

JC^-2

JC^-3

To protect the gold leaves of electroscope from the external electric disturbances, the aluminum foil is grounded by a thin wire, which is made up of:

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Aluminum

Silver

Copper

Brass

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