EASY
7th Foundation
IMPORTANT
Earn 100

The magnetic field around a current carrying coil
(a)Lasts for three hours
(b)Lasts as long as current flows through it
(c)Lasts till its half-life period
(d)Is permanent

50% studentsanswered this correctly

Important Questions on Electric Current and its Effects
EASY
7th Foundation
IMPORTANT

EASY
7th Foundation
IMPORTANT

HARD
7th Foundation
IMPORTANT

EASY
7th Foundation
IMPORTANT

EASY
7th Foundation
IMPORTANT
Match the two columns and select the correct option from codes given below.
Column I | Column II | ||
(a) | A bad conductor of electricity but good conductor of heat | (i) | CFL |
(b) | A wire twisted many times in the form of circles | (ii) | Nichrome |
(c) | Smart eco-friendly bulb | (iii) | Mica |
(d) | An alloy whose temperature can rise up to and used as heating element | (iv) | Coil |

EASY
7th Foundation
IMPORTANT
Observe the given circuit diagrams ( and ) and identify the correct statement.

EASY
7th Foundation
IMPORTANT
Which of the following statements is incorrect for the given circuit?

MEDIUM
7th Foundation
IMPORTANT
In which circuit the bulbs will glow brightly?
