Class starter 3- Resistances

Are the connections pictured series connections or parallel connections?

• Series

• Parallel

The unit of resistance is

• the ohm

• the ampere

• the volt

• the watt

The resistance of a conductor is not influenced by its

• length

• material

• color

• thickness

Ohm's law can be presented as follows:

• I = VR

• V = RI

• R = IV

• V = R : I

The resistance is 5 Ω and the amount of electric current is 2 A. This means that the amount of voltage is

• 10 V

• 7 V

• 2,5 V

• 0,4 V

The resistance is 5 Ω and the amount of voltage is 12 V. This means that the amount of electric current is

• 10 A

• 7 A

• 2,4 A

• 0,4 A

Three 6 Ω resistors are connected in series. The total resistance of the connection is

• 2 Ω

• 9 Ω

• 18 Ω

• 36 Ω

Three 6 Ω resistors are connected in parallel. The total resistance of the connection is

• 2 Ω

• 9 Ω

• 18 Ω

• 36 Ω