Electrical Concepts Challenge

What is the formula for Ohm's Law?

• I = R / V

• I = V x R

• V = I x R

• I = V / R

Define electric field strength.

• Electric field strength is the speed of electrons in a circuit

• Electric field strength is the energy stored in an electric field

• Electric field strength is the charge density at a point in space

• Electric field strength is the force experienced by a unit positive charge at a point in space.

How does the capacitance of a capacitor affect its ability to store charge?

• Lower capacitance increases the ability to store charge

• Higher capacitance decreases the ability to store charge

• The capacitance of a capacitor directly affects its ability to store charge. A higher capacitance means the capacitor can store more charge for a given voltage, while a lower capacitance means it can store less charge.

• The capacitance of a capacitor has no impact on its ability to store charge

Explain how a voltage divider works in a circuit.

• A voltage divider works by adding the resistors' values

• A voltage divider works by multiplying the input voltage

• A voltage divider works by dividing the input voltage into a fraction of the total voltage based on the ratio of the two resistors in the circuit.

• A voltage divider works by changing the input voltage

What is the formula for calculating power in an electrical circuit?

• Power (P) = V / I

• Power (P) = I x R

• Power (P) = V + I

• Power (P) = V x I

In Ohm's Law, what does the symbol 'V' represent?

• Resistance

• Current

• Power

• Voltage

What is the SI unit of capacitance?

• newton

• farad

• ohm

• joule

How does the electric field between two parallel plates of a capacitor change when the distance between the plates is increased?

• The electric field between the plates increases.

• The electric field between the plates becomes negative.

• The electric field between the plates decreases.

• The electric field between the plates remains constant.

What happens to the voltage across each resistor in a series circuit?

• The voltage across each resistor in a series circuit is the same as the total voltage of the circuit.

• The voltage across each resistor in a series circuit is zero

• The voltage across each resistor in a series circuit is inversely proportional to the resistance of the resistor

• The voltage across each resistor in a series circuit decreases with each resistor

How does the power dissipated in a circuit change if the resistance is doubled while the voltage remains constant?

• The power dissipated in the circuit will decrease by a factor of 4.

• The power dissipated in the circuit will decrease by a factor of 2.

• The power dissipated in the circuit will remain the same.

• The power dissipated in the circuit will increase by a factor of 2.