Electric Circuits Physics High School

The work done per unit positive charge is known as...

• Emf

• Voltage

• Current

• Resisitor

For a fixed supply voltage the current flowing though a conductor will decrease when

• Cross sectional area of the conductor is increased.

• Length of the conductor is increased.

• Length of the conductor is reduced.

• Cross sectional area is increased and length is decreased.

A circuit contains two unequal resistors in parallel.

• Current is same in both.

• Large current flows in larger resistor.

• Potential difference across each is same.

• Smaller resistance has smaller conductance

According to ohms law for a conductor at constant Temperature:

• Current in the conductor is inversely proportional to the potential difference across it.

• Current is not affected by a decrease or increase in potential difference.

• Current in the conductor is directly proportional to the potential difference across it.

• All of the above

Tags

NGSS.HS-PS2-5

Which of the following material is not used to make a conductor?

• Silver

• Copper

• Aluminium

• Carbon

The main difference between a parallel and a circuit series is .

• The current is decreased by a half in parallel circuits and is doubled in series circuits.

• The voltage across the parallel circuit is the same across each branch yet in series the voltage is the sum of the voltages across each component.

• Voltage is higher in series circuits compared to parallel.

• Voltage is used up in series circuits compared to parallel circuits

Calculate the Total Resistance of the circuit if R₁ = 3 ohms and R₂ = 6 ohms

• 10 Ohms

• 8 Ohms

• 4 Ohms

• 2 Ohms

Tags

NGSS.HS-PS3-5

Calculate the current flowing through the 6 ohm resistor if the current flowing in the series part of the circuit is 3A.

Note: R₁ = 3 ohms and R₂ = 6 ohms

• 3 A

• 2 A

• 1 A

• 1.5 A

The picture shows an electrical circuit. This circuit is a series circuit because:

• It uses a single battery.

• It has 3 light bulbs.

• The electrical current is divided between the three light bulbs.

• The same current flows through all three light bulbs.

Tags

NGSS.MS-PS2-3