Understanding Electrical Conductivity and Safety

Front

What is power in an electrical circuit?

Back

Power is defined as the product of voltage and amperage (P = V × I).

Front

What does it mean for a metal to be ferromagnetic?

Back

Ferromagnetic metals are those that can be attracted by magnets; only some metals possess this property.

Front

How can you keep a light bulb's brightness the same when increasing voltage?

Back

You can increase the number of resistors in the circuit.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state, such as a ball at the top of a hill.

Front

What happens to the potential energy of a ball when it rolls down a hill?

Back

The potential energy decreases as it converts to kinetic energy.

Front

What is the formula for calculating potential energy?

Back

Potential Energy (PE) = mass (m) × gravity (g) × height (h).

Front

What is the relationship between voltage, current, and resistance?

Back

This relationship is defined by Ohm's Law: V = I × R.

Front

What is the unit of power in an electrical circuit?

Back

The unit of power is the Watt (W).

Front

What is the effect of increasing resistance in a circuit?

Back

Increasing resistance decreases the current flow if the voltage remains constant.

Front

What is the role of a resistor in a circuit?

Back

A resistor limits the flow of electric current and can help control the brightness of a light bulb.