Answer:
Series circuit approximation = R1 >> R2 then R2 ≈ 0
Parallel circuit approximation = R1 << R2 then R2 ≈ 0
Explanation:
in a series circuit, if there is a large difference between two resistors then we can omit the resistor which has low resistance because the higher value resistor dominates.
R1 >> R2 then R2 ≈ 0
in a parallel circuit, if there is a large difference between two resistors then we can omit the resistor which has high resistance because the lower value resistor dominates.
R1 << R2 then R2 ≈ 0
Answer:
Explanation:
given,
charge of two spherical drop = 0.1 nC
potential at the surface = 300 V
two drops merge to form a single drop
potential at the surface of new drop = ?
r = 0.003 m
volume =
=
= 2.612 × 10⁻⁷ m³
R = 0.00396 m
Answer:
Efficiency = 20%
Explanation:
Given the following data;
Input energy = 1000 Joules
Output energy = 200 Joules
To find the efficiency of the solar cell;
Substituting into the formula, we have;
Efficiency = 20%
Answer: heat transfer
The heat is transferred from the hot coffee to the mug and air
The tiny particles that make up elements are called "molecules"