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Quiz 1
Mdcat-past-papers Quiz
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1. 2×10⁶e passing through a conductor in 1 millisecond. Electric current through conductor is:
3.2×10⁻¹⁰A
320×10⁻¹⁰A
32×10⁻¹⁹A
0.32×10⁻¹⁰A
2. Three resistors each having value R are connected as shown in figure. What is the equivalence resistance between X and Y
3R
R
R/3
R³
3. Three 6Ω are connected as shown in the diagram. What is the resistance between points A and B?
6Ω
320×10⁻¹⁰A
32×10¹⁹A
2Ω
4. If a resistor having resistance R is cut into three equal parts, then the equivalent of parallel combination is:
6/R
3/R
R/9
R/3
5. If 2A current passes through a resistor when connected to a certain battery. If the resistance is replaced by the double resistance, then the current will become:
2A
4A
6A
1A
6. A 3V battery is connected in series with ammeter and 2-ohm resistance after short-circuiting. What will be the reading of ammeter?
1A
1.5A
5A
6A
7. The ohmmeter of a portable digital multi-meter needs:
Internal battery
Wet cell
Voltmeter
Ammeter
8. A charge of 90C passes through a wire for 30 seconds. Then the current in the wire will be:
3A
0.3A
3mA
0.3mA
9. The magnitude of the current in metals is proportional to the potential difference across it as long as the temperature of conductor is kept constant is known as:
Joule's law
Gauss's law
Ohm's law
Ampere's law
10. Volt × Ampere is the measure of:
Current
Volt
Resistance
Power
11. The ohm's law is applicable if:
Temp becomes infinite
Temp increases
Temp decreases
Temp remains same
12. Which of the following refers to the DC current that does not change its intensity?
Eddy current
Surge current
Leakage current
Steady current
13. The SI unit of electric charge:
Ohm
Farad
Coulomb
Ampere
14. Ohm-meter is the unit of:
Resistance
Resistivity
Conductance
Conductivity
15. The magnitude of the current in metals is proportional to the applied voltage as long as temperature of conductor is kept constant. It is the statement of:
Joule's law
Gauss's law
Ohm's law
Ampere's law
16. Two electric bulbs "A" and "B" of powers 500W and 2000W respectively are connected to 220V supply. The ratio of current through A to current through B is:
1:02
1:08
1:04
1:16
17. In a conducting electric wire, the electric current flows due to:
Protons
Ions
Electrons
Holes
18. The domestic electricity supply has a frequency of:
150Hz
50Hz
100Hz
200Hz
19. What does the Coulomb represent in terms of charge?
Charge transported in 1 sec
Charge of 1 proton
Charge of 1 electron
Charge making 1N force
20. The I-V graph for a non-ohmic material is always:
Curved
Horizontal
Linear
Perpendicular
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