## Current Electricity Quiz-7

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background.

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q61. An ammeter with internal resistance 90Î© reads 1.85 A when connected in a circuit containing a battery and two resistors 700Î© and 410Î© in series. Actual current will be
•  1.85 A
•  Greater than 1.85 A
•  Less than 1.85 A
•  None of these
Solution
In general, ammeter always reads less than the actual value because of its resistance.

Q62.The current in a simple series circuit is 5.0.A. when an additional resistance of 2.0 Î© is inserted, the current drops to 4.0 A. the original resistance of the circuit in ohm was
•  1.25
•  8
•  10
•  20
Solution

Q63.

•   -4
•  +2
•  +4
•  -2
Solution

Q64. A house wife uses a 100 W bulb 8 h a day , and an electric heater of 300 W for 4 h a day. The total cost for the month of June at the rate of 0.05 rupee per unit will be
•  Rs 20
•  Rs 25
•  Rs 30
•  Rs 30 paise 50
Solution

Q65.Two cells, each of e.m.f.E and internal resistance r are connected in parallel between the resistance R. The maximum energy given to the resistor will be, only when
•  R=r/2
•  R=r
•  R=2r
•  R=0
Solution

Q66.

•  02.A, 0.1A
•  0.4A, 0.2A
• 0.1A, 0.2A
•  0.2A, 0.4A
Solution

Q67.An electric bulb is rated 60W,220V. The resistance of its filament is
Solution

Q68.A certain electrical conductor has a square cross-section, 2.0 mm on side, and is 12 m long. The resistance between its ends is 0.072Î©. The resistivity of its material is equal to
Solution

Q69.A wire 20 cm long and 1 mm^2in cross-section carries a current of 4A when connected to a 2V battery. The resistivity of the wire is
Solution

Q70. A thermo-emf V appears across a conductor maintained at a temperature difference T. The thomson coefficient is then given by
•

•

•

•

Solution

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