Second Long Test in General Physics 2

Which of the following diagrams show how to properly connect a voltmeter and ammeter to measure the voltage across and the current on the resistor?

• 
• 
• 
• 

According to Faraday's law, what should we do to decrease the induced emf on a coil of wire when you are placing a magnet in and out of It repeatedly?

I. Increase the number of loops

II. Decrease the number of loops

III. Make the magnet’s motion faster

IV. Make the magnet’s motion slower

• I and III

• II and III

• I and IV

• II and IV

In a closed circuit, which statement BEST describes conventional current?

• It is the movement of positively-charged particles from the positive terminal of the battery to its negative terminal.

• It is the movement of negatively-charged particles from the positive terminal of the battery to its negative terminal.

• It is the movement of positively-charged particles from the negative terminal of the battery to its positive terminal.

• It is the movement of negatively-charged particles from the negative terminal of the battery to its positive terminal.

When two resistors with unequal resistance values are connected to a battery to form a closed circuit, it is observed that the voltage across both resistors are equal. How are the resistors connected?

• In series

• In parallel

• Either in series or in parallel

• Neither in series nor in parallel

Consider a straight wire that creates a magnetic field around it. The magnitude of the magnetic field at a point that is a distance d away is B. What will be the magnitude of the magnetic field at a point that is a distance 2d away?

• B/4

• B/2

• 2B

• 4B

What is the relationship between a material's resistivity and conductivity?

• Direct

• Inverse

• Direct-square

• No relationship

What type of voltage does a dry cell and a generator supply? A dry cell supplies _____ current voltage while a generator supplies _____ current voltage.

• Direct; direct

• Alternating; direct

• Direct; alternating

• Alternating; alternating

Consider the following circuit. The current on resistors R1, R2, R3, and R4 are I1, I2, I3, and I4, respectively. Which equation correctly relates the current on each resistor?

• I1 = I2 = I3 = I4

• I1 = I2 = I3 + I4

• I1 + I2 = I3 + I4

• I1 + I2 = I3 = I4

When a straight current-carrying wire is placed perpendicular to a uniform magnetic field, it experiences a magnetic force. What is the SI unit of the magnetic force?

• Ohms

• Tesla

• Amperes

• Newtons

Which of the following values affect the magnetic field produced by a straight wire?

• Current on the wire

• Resistance of the wire

• Voltage across the wire

• Current on and voltage across the wire