WorksheetsElectric Current and Circuits
Total questions: 14
Worksheet time: 20mins
A 9.0-V battery is connected to a 3.5-Ω resistor and a 2.5-Ω resistor connected in series. Which statement is true?
The total electric potential and the electric potential for each resistor is the same.
The total current out of the battery and the current through each resistor is the same.
The total current out of the battery gets split up among the resistors.
Each resistor outputs the same power.
The current going through the 8.0-Ω resistor is ___ A.
Match the following circuit elements to their symbols.
battery
lamp
resistor
switch
ammeter
Since there are multiple pathways the current can take from the positive side of the battery to the negative side, in a (a) circuit, the (b) is divided up among the pathways, but the potential is the same for each pathway. In (c) circuits with only one pathway for the current, the (d) is divided up among the different elements.
Suppose light bulb and socket C was removed from the circuit shown. Wire is used to connect the switch to light bulb and socket B instead. What will happen to the total voltage of the battery when this happens?
It will stay the same.
It will increase so the bulbs A and B burn brighter.
It will decrease so the bulbs A and B will dim.
The circuit cannot work without light bulb and socket C where it is.
“The current through each individual element is the same as the current through the combination ( Icombination=IA=IB=... )” is true for which kind of combination?
Series combination
Parallel combination
A potential difference of 24 V is applied to a 150-Ω resistor. How much current flows through the resistor?
0.15 A
3600 A
6.25 A
0.16 A
A 200-W light bulb is connected across a 100-V dc power supply. What current will flow through this bulb?
0.90 A
0.36 A
0.60 A
2.0 A
The current through the starter motor of a car is 210 A. If the battery maintains 12 V across the motor, how much electrical energy is delivered to the starter in 10.0 s?
2500 J
25200 J
17.5 J
175 J
To measure electric potential, use a (a) and attach it in (b) . To measure current, use a (c) and attach it in (d) ,
If an 8.0-Ω resistor and a 12-Ω resistor and a 24-Ω resistor are connected in parallel, the equivalent resistance (total resistance) is ___ Ω
How many kilowatt-hours does a 550-W microwave use if it is run for 32 minutes per day for 30 days?
8800 kW·hr
293 kW·hr
17600 kW·hr
8.8 kW·hr
0.293 kW·hr
A(n) (a) is used to provide voltage for a circuit. A(n) (b) is used to either complete or disconnect a branch in a circuit. A(n) (c) is used to control the flow of current in a circuit. A(n) (d) is used to prevent the current from going over some maximum value.
