Am electroscope can be charged by conduction and induction.a.FALSEb.TRUE

The statement is b. TRUE.

Here's why:

An electroscope is a device used to detect and measure electric charge. It can indeed be charged by both conduction and induction.

1. Charging by conduction: This involves bringing a charged object in direct contact with the electroscope. The charged object will transfer some of its charge to the electroscope, charging it with the same type of charge (either positive or negative).

2. Charging by induction: This involves bringing a charged object near, but not in direct contact with, the electroscope. The presence of the charged object will cause the charges in the electroscope to redistribute, creating an induced charge. If the electroscope is then grounded (allowing excess charges to flow to the earth), it will be left with a net charge opposite to that of the charged object. The charged object can then be removed, leaving the electroscope charged.

So, an electroscope can be charged by both conduction and induction.