Calculating Current in Resistor of Magnetic Flux Circuit (V=18V, R=30Ω)

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To calculate the current in the resistor of a magnetic flux circuit with a voltage of 18V and resistance of 30Ω, the induced electromotive force (E) is determined using the formula E = A * (ΔB/ΔT), where A is the area and ΔB/ΔT is the rate of change of magnetic flux. The area is given as 33 cm², which converts to 0.0033 m², and the magnetic flux changes from 0 T to 0.5 T over 5 ms, resulting in an induced voltage of 0.33 V. The current (I) is then calculated using Ohm's law, I = E/R, yielding a current of 0.011 A. The calculations appear to be incorrect as they do not account for the total voltage applied in the circuit.
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Homework Statement


The circuit shown in Figure encloses an area of 33 cm2. The magnetic flux increases steadily from 0 T to 0.5 T in 5 ms. What is the current in the resistor during this time? (V=18 V, R=30 Ω)
27yv4j.jpg


Homework Equations





The Attempt at a Solution


E = A * (B/T) = 0.0033 * (0.5/0.005) = 0.33 V
I = E/R = 0.33/30 = 0.011A
What am I doing wrong here??
 
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