What law states that the algebraic sum of the currents entering and leaving a point must equal zero?

A parallel circuit composed of a 150 Ω and a 270 Ω resistor has a voltage of 120 V. What is the current in the 150 Ω resistor?

Circuit networks can be reduced to a single current source and a single parallel resistance. This conversion is done in accordance with _____.

What force pushes the electrons through a resistance in a circuit?

What type of resistor operates by moving the wiper arm with a screw of some number of turns?

The voltage drop across any branch of a parallel circuit is the same as _______________ voltage.

In a parallel circuit, the voltage across each branch must be _______________.

What is another term for a variable resistor?

To locate the north pole of an electromagnet, use the _____-hand rule.

The regions formed in the molecular structure of magnetic metals are sometimes called magnetic _____.