Chapter 11, Problem 2TC

Make the same ranking, only this time for each coil having twice as many as loops as in Question 1.

To determine

Rank the order of most to least reading on the galvanometer.

Answer to Problem 2TC

The most current will be deflected in B with ten loops, the least will be in C with four loops and in A the induced current will be same for each.

Explanation of Solution

The phenomenon of inducing a voltage by changing the magnetic field in a coil of wire is called electromagnetic induction. The amount of voltage induced depends on how fast the magnetic field lines are entering or leaving the coil. A galvanometer uses more loops of wire, therefore it is more sensitive. The greater the current in its windings, the greater is the deflection.

If the number of loops in the coil is doubled, then the coil A has six loops, coil B has ten loops, and coil C has four loops.

The most current will be deflected in B with ten loops and the least will be in C with four loops. The induced current will be the same for each in A.

Conclusion:

Therefore, the most current will be deflected in B with ten loops, the least will be in C with four loops and in A there will be induced current same for each.