EASY
10th CBSE
IMPORTANT
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Why does the connecting cord of an electric heater not glow while the heating element does?

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 6
Compute the heat generated while transforming 9000 coulombs of charge in one hour through a potential difference of 12 V.
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 7
Three conducting wires of equal lengths and equal diameters are first connected in parallel and then in series in an electric circuit. What will be the ratio of heat produced in parallel connection to heat produced in series connection?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 8
A current of 3 A produces 200 J of heat in a given time. Calculate the heat produced in the same time if the current is increased to 6 A.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 9
400 J of heat is produced per second in a 4 Ω resistor. Calculate the potential difference across the resistor.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 10
Resistance of 20 Ω and 30 Ω are connected in series across a 220 V mains supply. What is the heat produced by the combination in 5 minutes?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 1 - Electricity>EXERCISE>Q 11
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?
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.