EASY
10th Kerala Board
IMPORTANT
Earn 100

Thick insulated copper wires are used in the primary coil of a step-up transformer and in the secondary of a step-down transformer. What is the necessity of this?

Important Questions on Electromagnetic Induction

MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 19
Which situation causes short circuit?
HARD
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 20
What is the role of earthing wire in a household circuit?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 21
Why do we say that metallic devices should be earthed?
MEDIUM
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 22
An electric heater calibrated 1.5 kW, 230 V is connected to a household branch circuit having 5 A fuse wire and is, made to work. What will happen?
EASY
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 23
Which are the devices connected in series in a household circuit?
EASY
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 24
What can be done to save electrical energy in schools and houses?
EASY
10th Kerala Board
IMPORTANT
Physics Standard X Part 1>Chapter 3 - Electromagnetic Induction>Let us assess>Q 25
Why do some mobile phones use three pin plugs?