HARD
10th CBSE
IMPORTANT
Earn 100

A 2-V cell is connected to a 1-Ω resistor. How many electrons come out of the negative terminal of the cell in 2 minutes?

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 5
The amount of charge passing through a cell in 4 seconds is 12 C. What is the current supplied by the cell?
EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 6
A 6 V battery is connected across a 5 Ω resistor. Calculate the current passing through the resistor.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 7
When a 24-V battery is connected to a resistor, the current in it is 0.4 A. What is the resistance of the resistor? What would be the current through it when it is connected to a battery of 6 V?
EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 8

In an experiment, the current flowing through a resistor and the potential difference across it are measured. The values are given below. Show that these values confirm Ohm's law, and find the resistance of the resistor.I

I (ampere) 1.0 1.5 2.0 2.5 3.0
V (volts) 4.0 6.0 8.0 10.0 12.0
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 9
The resistivity of copper is 1.7×10-8 Ω m. (a) What length of copper wire of diameter 0.1 mm will have a resistance of 34 Ω ? (b) Another copper wire of the same length but of half the diameter as the first is taken. What is the ratio of its resistance to that of the first wire?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 10
Three resistors, each of resistance 12 Ω, are connected in parallel. What is the equivalent resistance?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 11
A uniform wire of resistance R is cut into two equal pieces, and these pieces are joined in parallel What is the resistance of the combination?
EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 12
You have three resistors of 9 ohms each. By combining them what can be (a) the highest resistance, and (b) the lowest resistance? (c) How can you combine them to get a resistance of 12 Ω?