HW. Electric Current & Electric Circuits I

A complete, unbroken path that charges can flow through is called an __________________.

• conductor
• electric circuit
• electric current
• insulator

The unit for the rate of current is the ______________.

• ampere
• volt
• ohm
• joule

Which of the following does not determine the resistance of a wire?

• temperature
• color
• length
• diameter

Circuits often include a _____________ to control the flow of current.

• switch
• conductor
• voltage
• current

_________________ found that current, voltage, and resistance are always related.

• Isaac Newton
• Albert Einstein
• Georg Ohm

Which equation can be rearranged to calculate the the electric current given?

• I = Q ÷ t

• Q = It

• I = Qt

• I = t ÷Q

Calculate the quantity of charge, Q, obtained when a current of 25 amps runs for 1 minute

• Q = 1,800 C

• Q = 1,500 C

• Q = 1000 C

• Q = 3000 C

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

• 0.15 A

• 3600 A

• 6.25 A

• 0.16 A

Q= which of the following situation has 1) the greatest electric current 2) the smallest electric current? Where a: is the flow of 3C in 1 s, b: a person walking 8m in 4 s and c: the flow of 6C in 3 s.

• 1) a, 2) b

• 1) c, 2) a

• 1) a, 2) c

• 1) b, 2) c

The amount of energy used to move one coulomb of electrons through the circuit is its

• current

• voltage

• resistance