PHY 102 WEEK 4 EXAM BUNDLED SET 2026
FULL ANSWER KEY GRADED A+
◉ Calculate the current drawn from a lamp that has a resistance of
2.2kΩ when a voltage of 220V is impressed across it. Answer: .1 A
◉ What causes electric shock in the human body? Current or
Voltage. Answer: Current
◉ Under dry conditions, approximately how much resistance does
the human body have?. Answer: Mega Ohms
◉ For three prong electrical plugs, the third round prong connects to
a wire in the electrical system that is ________.. Answer: GROUNDED
◉ List three electrical safety precautions.. Answer: Grounding all
exposed metal parts, standing on an insulated surface, one hand in a
pocket or behind one's back
◉ Describe the direction of current flow in a DC system and an AC
system.. Answer: DC- one direction
AC- charge alternates
, ◉ What is the standard voltage and frequency of electricity in North
America?. Answer: 120V, 60Hz, AC
◉ What is the standard voltage in Europe? Why is it different from
the US?. Answer: 240V
◉ Is power transmission more efficient at high or low voltage?
Why?. Answer:
◉ In addition to a transformer to lower the voltage, an AC-DC
converter uses a _______, a tiny electronic device that acts as a
__________ to allow _______________.. Answer: DIOXIDE, ONE WAY VALVE,
E-FLOW IN ONE DIRECTION
◉ Slow charging and discharging of a __________ provides continuous
and smoother current.. Answer: CAPICATOR
◉ A __________ acts as a storage reservoir for charge.. Answer:
CAPICATOR
◉ What is electric power? What are the units?. Answer: A charge
moving in a circuit expends energy
P=IV
FULL ANSWER KEY GRADED A+
◉ Calculate the current drawn from a lamp that has a resistance of
2.2kΩ when a voltage of 220V is impressed across it. Answer: .1 A
◉ What causes electric shock in the human body? Current or
Voltage. Answer: Current
◉ Under dry conditions, approximately how much resistance does
the human body have?. Answer: Mega Ohms
◉ For three prong electrical plugs, the third round prong connects to
a wire in the electrical system that is ________.. Answer: GROUNDED
◉ List three electrical safety precautions.. Answer: Grounding all
exposed metal parts, standing on an insulated surface, one hand in a
pocket or behind one's back
◉ Describe the direction of current flow in a DC system and an AC
system.. Answer: DC- one direction
AC- charge alternates
, ◉ What is the standard voltage and frequency of electricity in North
America?. Answer: 120V, 60Hz, AC
◉ What is the standard voltage in Europe? Why is it different from
the US?. Answer: 240V
◉ Is power transmission more efficient at high or low voltage?
Why?. Answer:
◉ In addition to a transformer to lower the voltage, an AC-DC
converter uses a _______, a tiny electronic device that acts as a
__________ to allow _______________.. Answer: DIOXIDE, ONE WAY VALVE,
E-FLOW IN ONE DIRECTION
◉ Slow charging and discharging of a __________ provides continuous
and smoother current.. Answer: CAPICATOR
◉ A __________ acts as a storage reservoir for charge.. Answer:
CAPICATOR
◉ What is electric power? What are the units?. Answer: A charge
moving in a circuit expends energy
P=IV
