Question

A solar panel measures 80 cm x 50 cm.
In direct sunlight the panel delivers
3.2 A at 15 V. If the intensity of sunlight
is 1000 W/m2, then the efficiency of
the solar panel in converting solar
energy into electrical energy is :​

Answer 1

Answer:

EFFICIENCY OF SOLAR PANEL ( ẞ ) = 12%

Explanation:

★ SOLAR PANEL ★

★ Given ;

» Area of Solar Panel [ Rectangle ] = Length × Breadth ( m² )

» Current Produced by Panel ( i ) = 3.2 Ampere

» Potential Difference in Panel ( V ) = 15 Volt

» Intensity of Sunlight ( I ) = 1000 W / m²

★ EFFICIENCY OF SOLAR PANEL ( ẞ ) = ???

_____ [ BY USING FORMULA ] _____

$[ Efficiency \: ( \: \beta \: ) \: = \: \frac{Power \: Output \: }{Power \: Input \: } ]$

★ Efficiency ( ẞ ) = [ Power Output / Power Input ]

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$[ Power \: ( \: p \: ) \: = \: INTENSITY \: (I) \: \times \: AREA \: (A) \: ]$

★ POWER INPUT ( P ) = INTENSITY × LENGTH × BREADTH

» P = 1000 × ( 50 × 80 × 10-⁴ m² )

» P = 1000 × 4000 × 10-⁴

★ POWER INPUT ( P ) = 400 WATT ★

________________________________________

★ POWER OUTPUT ( P ) = Voltage × current ★

★ P = 3.2 × 15 = 48 Watt.

_______________________________________

★ EFFICIENCY ( ẞ ) = [ POWER OUTPUT / POWER INPUT ] × 100%

★ ẞ = [ 48 / 400 ] × 100%

» ẞ = [ 0.12 ] × 100%

★ EFFICIENCY ( ẞ ) = 12 % ★

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ANSWER :- HENCE ; AT A 12% RATE SOLAR ENERGY IS CONVERTED INTO ELECTRICAL ENERGY .