At the time of short-circuit, the current in the circuit:
A. (a) reduces substantially
B. (b) does not change
C. (c) increases heavily
D. (d) varies continuously.
The direction of the current in a circuit is drawn in the direction in which positively charged particles would move, even if the current is constituted by the negatively charged...
Given: r = 0.4 mm = 0.4 × 10-3 m, I = 2 A
To find: Current density (J)
Formula: J = \(\frac{I}{A}\)
Calculation: From formula,
J = \(\frac{2}{3.142\times(0.4)^2\times10^{-6}}\)
= 3.978 × 106 A/m2
Given: E = 10 V, r = 3 Ω, I = 0.5 A
To find: i. Resistance of resistor (R)
ii. Terminal voltage of battery (V)
Formula: I = \(\frac{E}{R+r}\)
Calculation: From formula, R = \(\frac{E}{I}-r\)
∴...
