Which statement is correct?

The isotope fluorine-18, , undergoes decay to form a stable isotope. How many neutrons are there in a nucleus of the stable i...

Which particle is not a fundamental particle?

A potentiometer circuit is used to determine the electromotive force (e.m.f.) of a cell. The circuit includes a second cell o...

In the circuits shown, the batteries are identical and all have negligible internal resistance. All of the resistors have the...

The circuit shown contains a cell with negligible internal resistance. The energy transferred per unit charge in driving char...

A cell with internal resistance is connected to a light-dependent resistor (LDR), a fixed resistor and a voltmeter, as shown....

A torch uses three lamps connected in parallel and is powered by a cell of electromotive force (e.m.f.) 3.0 V and negligible ...

The diagram shows a circuit with a light-dependent resistor (LDR). The ammeter reads zero current. What is the resistance of ...

Kirchhoff's second law is a consequence of a basic principle. What is this principle?