EASY
10th CBSE
IMPORTANT
Earn 100

If 14.4 kJ of heat is produced when a current of 2 A passes through a resistor for 15 minutes, what is the voltage across the resistor?

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 12
Electric light bulbs are not filled with air. Explain why. Also explain why nitrogen or argon is used in them.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 13
Calculate the potential difference across a 5 Ω resistor if 80 J of heat is produced in it per second.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 14
What are the three factors on which the heat produced by an electric current depends? Also state how the heat produced depends on each factor.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 15
Establish the relation between 1 kWh and the SI unit of energy.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 16

A lamp rated 100 W at 220 V is connected to the mains electric supply. What amount of current is drawn from the supply line if the voltage is 220 V?

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 16
A lamp rated 100 W at 220 V is connected to the mains electric supply. What is the resistance of the lamp?
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 17
An electric bulb draws a current of 0.8 A and works on 250 V for an average of 8 hours a day. If energy costs Rs. 3 per kWh, calculate the monthly bill for 30 days.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 18
In a house, four 60 W electric bulbs are lighted for 2 hours and two 100 W electric bulbs are lighted for 4 hours everyday. Calculate the energy consumed in the house for 30 days.