Accelerate NEET 2020: Current Electricity Class 2 (09.10.2019)

Attempt now to get your rank among 204 students!

Question 1

The charge(q) (in C) flowing through a cross-sectional area is given as a function of time(t) (in sec):
q(t)=(6t²+3t+4) A
What is the instantaneous current through the cross-section at t=1 sec?

• A11 A
• B13 A
• C15 A
• D17 A

Question 2

A ring is made of a wire having a resistance R₀= 12. Find the points A and B, as shown in the figure, at which a current carrying conductor should be connected so that the resistance R of the sub circuit between these points is equal to 8/3

• A
• B
• C
• D

Question 3

A current of 3 A flows through the 2 Ω resistor shown in the circuit. The power dissipated in the 5 Ω resistor is

• A4W
• B2W
• CI W
• D5W

Question 4

The thermo emf of a hypothetical thermocouple varies with the temperature of hot junction as in volts, where the ratio is. If the cold junction is kept at 0⁰c, then the neutral temperature is

• A700 °C
• B1400 °C
• C-350 °C
• DNo neutral temperature is possible for this thermocouple

Question 5

An inductor (L = 20 H), a resistor (R = 100) and a battery (E = 10 V) are connected in series. After a long time, the circuit is short-circuited and then the battery is disconnected. Find the current in the circuit at 1 ms after short circuiting.

• A4.5 x 10⁶ A
• B3.2 x 10^-5 A
• C9.8 x 10^-6 A
• D6.7 x 10^-4 A

• 204 attempts
• 2 upvotes
• 5 comments