On which of the following does the operation of a moving coil ammeter depend? i. Electromagnetic induction ii. Force on a carrying-current conductor iii. Magnetic effect of an electric current
i only
ii only
iii only
ii and iii only
i,ii and iii
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The operation of a moving coil ammeter depends on both the force on a current-carrying conductor and the magnetic effect of an electric current. This means the correct answer is:
D. ii and iii only
The force on a current-carrying conductor in a magnetic field causes the coil to deflect, and this deflection is measured to determine the current. This principle leverages the magnetic effect of an electric current.
The correct answer is D. ii and iii only.
A moving coil ammeter works based on:
ii. Force on a current-carrying conductor
The coil in the ammeter carries current and is placed in a magnetic field. This causes a force (torque) that moves the needle.
iii. Magnetic effect of an electric current
The current in the coil generates a magnetic field, which interacts with the permanent magnetic field, producing the motion.
The correct answer is actually E becos the operation of a moving coil galvanometer depends on the three values given
