1. Which direction do magnetic field lines point inside a magnet?

(a) from the north pole to south pole

(b) from the south pole to the north pole

(c) from the north pole to the centre

(d) from the south pole to the centre

2. When using the electron flow convention to illustrate electrical current in a coil, which of the following is used to determine the direction of the resulting magnetic field?/U

(a) right-hand rule for a straight conductor

(b) left -hand rule for a coiled conductor

(c) conventional current method

(d) right-hand rule for a solenoid

3. The following diagram is a view from above a table with a current-carrying conductor stretched across the table top. Conventional current is flowing from left to right. A compass is lying flat on top of the conductor. What is the direction of the compass needle?

1. to the left of the page
2. to the right of the page
3. to the top of the page
4. to the bottom of the page

4. The motor principle states that a current-carrying conductor experiences a force

(a) perpendicular to the magnetic field and parallel to the current

(b) parallel to both the magnetic field and the current

(c) perpendicular to both the magnetic field and the current

(d) parallel to the magnetic field and perpendicular to the current

Part B: Full Solution- show formulas and all work for full credit.

1. The number of windings on the primary coil of a transformer is 2.5 times greater than on the secondary coil. The primary coil has a current of 3.0 A and a voltage of 15.0 V. Determine the voltage and current on the secondary coil. (4 marks)

2. Indicate the proper direction for the following diagrams. (6 marks)

A.Induced magnetic field from a current in a B.Induced magnetic field from a coil wire. C. The direction the wire in the center will A. move B. N S C.\fpoot A Pole O(6) south to north Pole 2 left hand rule for a coiled conductor 3)@ to the top of the page . @ perpendicular to both the magnetic field and the current Poot B . we know NP NP - 2.5 NS VS = VP/( NPINS ) 15 - 2.5 = 6Y Is? _ ND - 2.5 Ip NS Is = 2.5 Ip = 2.5 x 3 Amp = 7.5 Amp2 IN S 3 " right hand thumb rule cussing the finger in thidion of current and thumb shows dion of magnetic field. 4 NJ B right hand throb oule finguoes are pointed in the dion if current and pulm in dion of magnetic field thumb shows the foose dion, 5 left side of coil :- upward force dion right ", " " downwood froze dirn