grad 12 physics quiz 4 quarter 2

The sum of the currents enter at a point equal the sum of the current leaves this point. this is called ......

• ohm,s law

• newton first law

• Kirchhoff,s first law

• Kirchhoff,s second law

The equivalent unit of ampere is .....

• newton . meter

• Joule / columb

• volt / ohm

• joule / second

10 ohm and 15 ohm are connected in parallel then their equivalent resistance is .....

• 150 ohm

• 25 ohm

• 6 ohm

• 5 ohm

If the potential difference between the terminals of a conductor of resistance (R) is 24 v and the current passing is 4 A then the value of (R) is ......

• 6 ohm

• 18 ohm

• 30 ohm

• no correct answer

Two resistors connected in parallel, one of them is 1 ohm, then their equivalent resistance is .....

• more than one ohm

• equal one ohm

• less than one ohm

three resistors , 5 ohm , 6 ohm and R ohm are connected in series, if their equivalent is 20 ohm then the value of R is .....

• 1 ohm

• 11 ohm

• 20 ohm

• 9 ohm

In the opposite figure the value and direction of I₃

• 4 A from Z to a

• 4 A from a to Z

• 10 A from Z to a

• 10 A from a to Z

In the opposite figure find value of (I)

• 2 A

• 4 A

• 5 A

• 10 A

In opposite figure find value of R₄ where the total equivalent resistance of the circuit is 10 ohm

• 10 ohm

• 2 ohm

• 8 ohm

• 4 ohm

In the opposite figure find the current passing through the circuit

• 16 A

• 17 A

• 5 A

• 4 A