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Physics
UTME / JAMB 2026
Energy and Power
Diagram
Solution
The electrical power developed in the resistor above is
A
8 W
B
64 W
C
256 W
D
128 W
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Energy and Power
Solution
A 500W electric oven plugged into a 220 V source will consume an electric current of
A
4.88A
B
2.27A
C
6.43A
D
3.23A
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Energy and Power
Solution
A refrigerator uses 150W. If it is kept on for 336 hours nonstop. What is the energy consumed in Kwh?
A
60.20Kwh
B
25.01Kwh
C
50.40Kwh
D
30.20Kwh
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Energy and Power
Diagram
Solution
The electrical power developed in the resistor above is
A
8W
B
64W
C
128W
D
256W
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Diagram
Solution
The value of R required to make the galvanometer measure voltage up to 40V in the diagram above
A
1885\(\Omega\)
B
1990\(\Omega\)
C
1995\(\Omega\)
D
1100\(\Omega\)
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Solution
In voltage measurement, the potentiometer is preferred to voltmeter because it
A
has a wider range
B
consumes negligible current
C
is bulky
D
responds faster than voltmeter
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Solution
A refrigerator uses 150W. If it is kept on for 336 hours non-stop, what is the energy consumed in KWh?
A
60.20KWh
B
50.40KWh
C
25.01KWh
D
30.20KWh
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Solution
When a cell of e.m.f 3.06V is connected, the balance of a potentiometer is 75cm, Calculate the new balance of a cell of e.m.f 2.295V
A
56.26cm
B
73.20cm
C
77.80cm
D
78.70cm
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Diagram
Solution
The value of R in the above circuit to make the galvanometer measure 2A is
A
0.128\(\Omega\)
B
0.256\(\Omega\)
C
0.612\(\Omega\)
D
1.00\(\Omega\)
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2024
Energy and Power
Solution
A particular household utilizes three electrical appliances for six hours daily if the appliances are rated 80W, 100W, and 120W respectively. Calculate the electrical bills paid monthly if an average month is 31 days. [1kwh = #24.08k]
A
₦ 2843.22k
B
₦ 1950.22k
C
₦ 1343.66k
D
₦ 46.23k
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2023
Energy and Power
Solution
Which of the following is a type of incandescent light source?
A
Fluorescent lamp
B
LED lamp
C
Tungsten filament lamp
D
Neon lamp
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2022
Energy and Power
Solution
A galvanometer with a full-scale deflection of 20 mA is Converted to read 8 K by connecting a 395 \(\Omega\) resistor in series with it. Determine the internal resistance of the galvanometer
A
2.5\(\Omega\)
B
5.0\(\Omega\)
C
8.0\(\Omega\)
D
10.0\(\Omega\)
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2022
Energy and Power
Solution
A lamp is rated 240 V, 60 W. Determine the resistance of the lamp when lit?
A
120\(\Omega\)
B
240\(\Omega\)
C
540\(\Omega\)
D
960\(\Omega\)
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Energy and Power
Solution
A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?
A
2400 J
B
9600 J
C
1500 J
D
1200 J
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2021
Energy and Power
Solution
Electric motor primarily converts?
A
electrical energy to chemical energy.
B
kinetic energy to potential energy
C
electrical energy to mechanical energy
D
electrical energy to heat energy.
medium Difficulty
Study Explanation