Current is the rate at which electric charge flows past a point in a circuit. In other words, the current is the rate of flow of electric charge. Voltage, also called electromotive force, is the potential difference in charge between two points in an electrical field. http://bit.ly/2PIOIQM

1. BASICS OF BIOMEDICAL
VOLTAGE
AND
CURRENT
Prepared by Atheena Pandian

2. PRESENTATION
OUTLINE
MAIN TOPICS
What is Voltage?
What is Current?
Symbol for Current
Symbol for Voltage
Measurement of
Current
Measurement of
Voltage
Releation between
Voltage and Current
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3. WHAT IS
VOLTAGE?
Voltage, also called
electromotive force, is a
quantitative expression
of the potential
difference in charge
between two points in an
electrical field.

4. WHAT IS
VOLTAGE?

5. SYMBOL
'V'
The volt (symbol: V) is the
derived unit for electric
potential, electric potential
difference (voltage), and
electromotive force.

6. WHAT IS
CURRENT?
Current is a flow
of electrical
charge carriers,
usually electrons
or electron-
deficient atoms

7. WHAT IS
CURRENT?

8. SYMBOL
'I'
The conventional symbol for
current is I, which originates
from the French phrase
intensité du courant,
(current intensity).

9. BASICS OF BIOMEDICAL
Current and Voltage comaprision

10. CURRENT IS
GENERATED IN THE
CIRCUIT BY THE
APPLIED VOLTAGE

11. CURRENT - VOLAGE LAW IS
OHM'S LAW
V = I R
V- VOLTAGE
I - CURRENT
R- RSISTANCE

12. CURRENT MEASUREMENT
It is measured in the unit of the Ampere, simply called “Amp,” (A).
The most common way to measure current in a circuit is to break the
circuit open and insert an “ammeter” in series (in-line) with the
circuit so that all electrons flowing through the circuit also have
to go through the meter.
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13. VOLTAGE MEASUREMENT
To measure voltage on an electronic circuit, you don't have to insert
the meter into the circuit.
Instead, all you have to do is touch the leads of the multimeter to
any two points in the circuit.
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14. THANK YOU