Question 1 Solenoidal field problem - part (a) A search coil explores the magnetic field produced by a solenoid of finite length. Where is the field the strongest? In the middle of the solenoid Inside the solenoid right beside the wires At the end of the solenoid Just outside the solenoid beside the wires Question 2 0.5 pts 0.5 pts Solenoidal field problem - part (b) A search coil explores the magnetic field produced by a solenoid of finite length. Compared to the direction of the field in the middle of the solenoid, where does the field point in the opposite direction? Inside the solenoid right beside the wires At the end of the solenoid Just outside the solenoid beside the wires Question 3 0.5 pts Emf experiment problem - part (a) The online text gives the expected emf in a search coil placed on the axis of a solenoid in terms of angular frequency w and solenoid angles. This equation can be re-expressed in terms of experimentally measured quantities. (See boxed equation in the prelab question in the online text Eqn. 9-10, which is reproduced below.) Epp = 2(5/2)N, A, fcoseso Nf Irms/l + D 10.1 cm and length l = 30.0 cm that is Consider a 3000-turn solenoid with diameter D = driven at frequency f = 600. Hz with a current of Irms = 125 mA, and a search coil with Ns 100 turns and an area of N = 1.0 x 10-3 m that is oriented to maximize the flux. What is the predicted emf Epp in volts? = 2.46 139 1.59 1.99 Question 4 0.5 pts Emf experiment problem - part (b) The online text gives the expected emf in a search coil placed on the axis of a solenoid in terms of angular frequency w and solenoid angles. This equation can be re-expressed in terms of experimentally measured quantities. (See boxed equation in the prelab question in the online text Eqn. 9-10, which is reproduced below.) Epp = 2(5/2) N, A, fcose, o Nf Irms/l + D Consider a 3000-turn solenoid with diameter D = 10.1 cm and length l = 30.0 cm that is driven at frequency f = 600. Hz with a current of Irms = 125 mA, and a search coil with N = 100 turns and an area of N = 1.0 x 10 m that is oriented to maximize the flux. If the driving frequency f is doubled from 600 Hz to 1200 Hz without changing the amplitude of the driving signal, how much do you expect the current in the solenoid to change? decrease by factor 4 decrease by factor 2 increase by factor 2 stay the same