Sources of Current

Q.

A cell is used to ___.

1. measure current in the circuit

2. prevent current in a circuit

3. produce current in a circuit

4. limit current in a circuit

Q.

Which of these can produce electric current ?

1. electric cell

2. resisitor

3. switch

4. all of these

Q.

A bulb is the source of electricity

1. True
2. False

Q.

Which of the following device is not the source of current?

1. Battery

2. Generator

3. Rheostat

4. Cell

Q.

Which of the following can be recharged by passing direct current?

1. Lithium ion batteries

2. Fan

3. Bulbs

4. Electric motors

Q. Frequency of direct current (D.C) is zero.

1. False
2. True

Q.

What is the SI unit of potential difference?

Q. How much work is being done by $14V$ battery to transfer a charge of $1C$ in a conductor?

1. $7J$
2. $2J$
3. $14J$
4. $1J$