A student builds a simple circuit with a single resistor of resistance 2R2R2, R and current III, and measures an electric potential difference of \Delta V_1ΔV 1 ​ delta, V, start subscript, 1, end subscript across the resistor. Then, the student decreases the current through the circuit to \dfrac{I}{2} 2 I ​ start fraction, I, divided by, 2, end fraction.

what are the statements? x

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

a. are

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