A transformer is designed to convert the voltage from 240 V a.c mains to 12 V, and has 4000 turns on its primary coil. The turns on its secondary coil should be
A. 100
B. 200
C. 120
D. 480
Related Questions on Chapter 4: Electromagnetism Physics Mcqs for High School - Grade 10
In a transformer, the primary coil is connected to
A. Alternating current (AC) source
B. Direct current (DC) source
C. resistor
D. inductor
Weak ionic current in our body that travels along the nerve can produce the
A. atoms
B. heat
C. potential difference
D. magnetic effect
In transformer the changing current in primary coil induces changing magnetic field in
A. resistor
B. inductor
C. insulator
D. secondary coil
The magnetic field produced near the current-carrying conductor is
A. stronger
B. weaker
C. neutral
D. none of above