2058

Physics Current Electricity Level: High School

A total resistance of 3.0 Ohm is to be produced by combining an unknown resistor R with a 12 Ohm resistor . What is the value of R and how is to be connected to the 12 Ohm resistor ?

a) 4.0 Ohm, parallel

b) 4.0 Ohm, series

c) 2.4 Ohm, parallel

d) 2.4 Ohm, series

e) 9.0 Ohm, series

1674

Physics Current Electricity Level: High School

A household circuit rated at 120 Volts is protected by a fuse rated at 15 amps . What is the maximum number of light bulbs which can be lit simultaneously in parallel in this circuit without blowing

a) 4

b) 18

c) 20

d) 24