Suppose an RC-series circuit has a variable resistor. If the resistance at time t is giv...

Suppose an RC-series circuit has a variable resistor. If the resistance at time t is given by R = k₁ + k₂t, where k₁ and k₂ are known positive constants, then (9) becomes If E(t) = E₀ and q(0) = q₀, where E₀ and q₀ are constants, show that