the electromagnet shown in the image has a wire coiled 5 times around a nai. it can lift up to 7 metal paper clips. What two changes would cause the electromagnet to increase its electromagnetic force and lift more paper clips?

one of the answers should be increase the number of turns of wire on the nail

Explanation: the more you wrap the Wire on a nail, its electromagnet would increase

Explanation:

The electromagnetic force of an electromagnet can be increased by:

1. wrapping the wire around the coil more times; or

2. increasing the current passing through the coil.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.