HARD
10th CBSE
IMPORTANT
Earn 100

Deduce the expression for the equivalent resistance of the two resistances R1, and R2; connected in series.

Important Questions on Electricity

HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 6
Derive an expression for the heat produced in time t in a wire of resistance R, which is carrying a current I.
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 1
When a particle of charge 10 μ C is brought from infinity to a point P, 2.0 m J of work is done by the external forces. What is the potential at P?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 2
Calculate the work done in taking a charge of 0.02 C from A to B if the potential at A is 20 V, and that at B is 30 V.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 3
How much charge flows through a wire in 10 minutes if the current through it is 25 A?
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 4
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?
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?