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Worksheetsวงจรไฟฟ้า
Total questions: 25
Worksheet time: 31mins
A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?
0.15 A
3600 A
6.25 A
0.16 A
This is an example of a ______ circuit
Series
Parallel
Open
Dihexihedral
A form of energy caused by the movement of electrons
electricity
voltage
electric current
parallel circuit
A copper wire of length 2.5 m and cross-sectional area 2.4 × 10-7 m2 has a resistivity of 1.7x10-8Ωm. What is the resistance of the wire?
1.6x10-15Ω
1.0x10-14Ω
0.18Ω
5.6Ω
Solve for the total resistance of the circuit shown
50 V
1970 ohms
705 K ohms
20 Amps
What is the total circuit resistance of the following five resistors connected in series?
R1 = 27 ohms
R2 = 33 ohms
R3 = 51 ohms
R4 = 1.2 kohms
R5 = 240 ohms
Rt = __________ Ohms
353.2
1551
1.9 K
If one of the light bulb in series circuit is taken off, what will happen to the other light bulb?
The other light bulb will be on
The other light bulb will be off
The other light bulb will stay on
Both light bulb will be on
In parallel circuit, there are _________ pathways for charge to flow.
One
Two or more
None
Zero
In a parallel circuit, if we remove one of the light bulb, what will happen to the other light bulb?
The other light bulb will stay on.
The other light bulb will be off
Both light bulb will be on
Both light bulb will be off
In series circuit, there is only _____ path for electrons to flow.
One
Two
Three
Four
What potential difference is required across an 8.0-Ω resistor to cause 2.0 A to flow through it?
4.0 V
16 V
8.0 V
32 V
An instrument is rated at 240 W if it is connected across a 120-V dc power supply.
(a) What current does it draw under normal operation?
(b) What is its resistance?
(a) 0.20 A (b) 360 Ω
(a) 60 A (b) 2.0 Ω
(a) 2.0 A (b) 60 Ω
(a) 0.2 A (b) 60 Ω
A 100-W light bulb is operated by a 110-V dc source. What is the resistance of this bulb?
100 Ω
8.0 × 10-3 Ω
120 Ω
240 Ω
