When the electrons are in ordered motion,there will be a net charge crossing through any cross-section of the conductor. 

No. In projectile motion, the horizontal and vertical motion are independent of each other because both motions don’t affect each other.

Drift velocity and current density will change as it depends upon area of cross-section whereas current will remain constant.

(A) Head, (B) body

Correct option is  D) zero

D) Electric current is random motion of free electrons in a conductor.

B) increases

1 electron = 1.6 × 10-19 C ∴ 1 C = \(\frac{1}{1.6\times10^{-19}}\) electrons = 0.625 × 1019 electrons ……. (Taking reciprocal from log table) = 6.25 × 1018 electrons Hence, 6.25 × 1018 electrons are required to accumulate a charge of...

Given: l = 15 m, A = 6.0 × 10-7 m2, R = 5 Ω To find: Resistivity (ρ) Formula: ρ = \(\frac{RA}{l}\) Calculation: From formula, ρ = \(\frac{5\times6\times10^{-7}}{15}\) ∴ ρ = 2 × 10-7 Ω m

(A) length of the conductor.

Monocot stem