MEDIUM
10th CBSE
IMPORTANT
Earn 100

A charge of 20 C leaves a cell in 10 s with 150 J of energy delivered to an external circuit. Calculate the current that flows from the cell and the potential difference across the cell.

Important Questions on Electricity

MEDIUM
10th CBSE
IMPORTANT
How many electrons should pass through a conductor in 1 s to give a current of 2 A?
MEDIUM
10th CBSE
IMPORTANT
Calculate the energy transferred per second to an electric iron when it is connected to the 220 V mains supply. The current that flows through the iron is given to be 5 A.
EASY
10th CBSE
IMPORTANT
What is the difference between a electrical conductor and an insulator? State two examples of each.
MEDIUM
10th CBSE
IMPORTANT
Explain why a voltmeter should have a very high resistance and why an ammeter should have a very low resistance?
EASY
10th CBSE
IMPORTANT
Draw the circuit symbol for the battery of four cells.
EASY
10th CBSE
IMPORTANT
Draw the circuit symbol for galvanometer.
EASY
10th CBSE
IMPORTANT
Draw the circuit symbol for variable resistance.
EASY
10th CBSE
IMPORTANT
Draw the circuit symbol for fixed resistance.